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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | // SPDX-License-Identifier: GPL-2.0-only /* * Apple Onboard Audio driver for Toonie codec * * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> * * This is a driver for the toonie codec chip. This chip is present * on the Mac Mini and is nothing but a DAC. */ #include <linux/delay.h> #include <linux/module.h> #include <linux/slab.h> MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("toonie codec driver for snd-aoa"); #include "../aoa.h" #include "../soundbus/soundbus.h" #define PFX "snd-aoa-codec-toonie: " struct toonie { struct aoa_codec codec; }; #define codec_to_toonie(c) container_of(c, struct toonie, codec) static int toonie_dev_register(struct snd_device *dev) { return 0; } static struct snd_device_ops ops = { .dev_register = toonie_dev_register, }; static struct transfer_info toonie_transfers[] = { /* This thing *only* has analog output, * the rates are taken from Info.plist * from Darwin. */ { .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S24_BE, .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000, }, {} }; static int toonie_usable(struct codec_info_item *cii, struct transfer_info *ti, struct transfer_info *out) { return 1; } #ifdef CONFIG_PM static int toonie_suspend(struct codec_info_item *cii, pm_message_t state) { /* can we turn it off somehow? */ return 0; } static int toonie_resume(struct codec_info_item *cii) { return 0; } #endif /* CONFIG_PM */ static struct codec_info toonie_codec_info = { .transfers = toonie_transfers, .sysclock_factor = 256, .bus_factor = 64, .owner = THIS_MODULE, .usable = toonie_usable, #ifdef CONFIG_PM .suspend = toonie_suspend, .resume = toonie_resume, #endif }; static int toonie_init_codec(struct aoa_codec *codec) { struct toonie *toonie = codec_to_toonie(codec); /* nothing connected? what a joke! */ if (toonie->codec.connected != 1) return -ENOTCONN; if (aoa_snd_device_new(SNDRV_DEV_CODEC, toonie, &ops)) { printk(KERN_ERR PFX "failed to create toonie snd device!\n"); return -ENODEV; } if (toonie->codec.soundbus_dev->attach_codec(toonie->codec.soundbus_dev, aoa_get_card(), &toonie_codec_info, toonie)) { printk(KERN_ERR PFX "error creating toonie pcm\n"); snd_device_free(aoa_get_card(), toonie); return -ENODEV; } return 0; } static void toonie_exit_codec(struct aoa_codec *codec) { struct toonie *toonie = codec_to_toonie(codec); if (!toonie->codec.soundbus_dev) { printk(KERN_ERR PFX "toonie_exit_codec called without soundbus_dev!\n"); return; } toonie->codec.soundbus_dev->detach_codec(toonie->codec.soundbus_dev, toonie); } static struct toonie *toonie; static int __init toonie_init(void) { toonie = kzalloc(sizeof(struct toonie), GFP_KERNEL); if (!toonie) return -ENOMEM; strlcpy(toonie->codec.name, "toonie", sizeof(toonie->codec.name)); toonie->codec.owner = THIS_MODULE; toonie->codec.init = toonie_init_codec; toonie->codec.exit = toonie_exit_codec; if (aoa_codec_register(&toonie->codec)) { kfree(toonie); return -EINVAL; } return 0; } static void __exit toonie_exit(void) { aoa_codec_unregister(&toonie->codec); kfree(toonie); } module_init(toonie_init); module_exit(toonie_exit); |